User guide

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Target Sound Options
Choose which Audyssey target curve you want to use by selecting from the Target
Sound Options menu.
Midrange Compensation
It is recommended that you engage the Midrange Compensation option for your first
listening test (this is selected by default). Midrange compensation is sometimes
necessary to correct for the directivity differences that often occur in that frequency
range due to the crossover circuitry or horn-loaded speakers. You can later return
to this screen and disengage this option if you prefer.
Design
Press the Design button to launch the Target Curve Designer feature.
Click the ► button to calculate your correction filters when you are ready to proceed
to the next screen.
Disconnect the Microphone Preamplifier
After the ► button is pressed, a warning will appear to check that the Microphone
preamplifier mini-XLR cable has been removed from the 1/Mic input of the Sound
Equalizer.
Warning: You must remove the
calibrated preamplifier’s mini-XLR-to-
RCA connection from the 1/Mic input
of the Sound Equalizer before
continuing. Leaving the microphone
connected will cause feedback at
levels that could damage the speakers.
Target Sound Options
To cover a wide range of
room types, MultEQ Pro
currently provides a
selection of four target
curves.
Flat curve creates
equalization filters that
correct the response to
flat, from the low frequency
cutoff point that MultEQ
Pro has determined, to the
upper frequency limit of the
tweeters. This setting must
be used in a THX system in
order to allow THX re-
equalization to operate as
it was intended. It is also
recommended for very
small or highly treated
rooms in which the listener
is seated close to the
loudspeakers.
High Frequency Roll Off 1
curve introduces a slight
roll off at high frequencies
that accounts for the
balance between direct and
reflected sound for small to
medium size rooms (room
volume less than 2500 cu.
ft.)
High Frequency Roll Off 2
curve introduces a
slightly greater roll off at
high frequencies,
restoring balance
between direct and
reflected sound for
medium to large size
rooms (room volume
between 2500 and 5000
cu. ft.)
SMPTE 202M curve is an
international standard for
the high frequency roll-off
applied in a typical 500-
seat movie theater. It is
appropriate for
professional mixing spaces
and dubbing stages that
must be calibrated for film
sound postproduction. It
can also be used in
extremely large playback
spaces (room volume
greater than 5000 cu. ft.)